FIG. 3.

X-ray and CT images of various tissue-engineered scaffolds. (A) Micro-CT analysis of proteoglycan production by chondrocytes seeded in various fibroin scaffolds using Hexabrix contrast agent enhancement. Reprinted with permission from Wang et al.²⁰ (B) Three-dimensional reconstructed micro-CT images of vessel ingrowth within a gel system consisting of an arteriovenous loop placed in a particulated porous hydroxyapatite and β-tricalcium phosphate matrix with and without incorporation of exogenous growth factors. Reprinted with permission from Arkudas et al.²⁵ (C) Synchroton radiation CT imaging of polyurethane scaffolds seeded with endothelial cells and labeled with anti-CD34-biotin antibodies and FeO-streptavidin particles. Reprinted with permission from Thimm et al.²⁶ Color images available online at www.liebertpub.com/teb